MP143 Transfer Case - Disassembly

DISASSEMBLY




MP143 EXPLODED VIEW








MP143 COMPONENT LOCATIONS





1. Position transfer case on shallow drain pan. Remove drain plug (2) and drain lubricant.










2. Using Holder C-3281 (1), remove the rear output flange (2) nut.










3. Remove the rear output shaft flange (1) from the main shaft. If flange is difficult to remove by hand, remove it with bearing splitter, or with standard two jaw puller. Be sure puller tool is positioned securely on flange.










4. Remove the dampener bolts from the transfer case.










5. Remove the dampener from the transfer case.





6. Remove the shift motor bolts from the transfer case.










7. Remove the shift motor (1) from the transfer case.










8. Support transfer case so rear case is facing upward and the input gear is not contacting the work surface.
9. Remove bolts holding front case to rear case.










NOTE: Be careful not to damage the front and rear case sealing surfaces.

10. Loosen rear case with a case splitter or suitable tool to break sealer bead. Insert case splitter or suitable tool only into notches provided at each end of case.
11. Remove rear case (1) from front case (2).










12. Remove front output shaft drive sprocket retaining ring (2) from the front output shaft (1).










13. Remove mainshaft drive sprocket retaining ring (1).










14. Remove the drive sprockets (1, 2) and the drive chain (3) as one.










15. Remove the mainshaft (1) and mode fork assembly (2) from the front case.










16. Remove the mode fork assembly (1) from the mainshaft (2).










17. Remove the mode fork spring (2) from the mode fork rod (1).










18. Remove the mode sleeve (2) from the mainshaft (1).









19. Remove the mode hub snap ring (1) from the mainshaft (3).










20. Remove the mode hub (1) from the mainshaft (2).




TYPICAL CHAIN GUIDE BOLTS





21. Remove the screws (1) holding both chain guide rails to the front case (2).




TYPICAL CHAIN GUIDE RAILS





22. Remove both chain guide rails (1) from the transfer case.
23. Remove the magnet from the magnet pocket.










24. Remove the front output shaft assembly (2) from the front case (1) and the front output shaft front bearing.
25. Remove the front output shaft seal with a suitable pry tool or a screw mounted in a slide hammer.

26. Remove the input shaft seal with a suitable pry tool or a screw mounted in a slide hammer.